MRI: Upgrade of powder X-ray diffraction instrumentation at Vassar College

1229257沃克这主要的研究仪器（MRI）计划资助支持在瓦萨学院，一个非博士学位的地球科学和地理系的粉末X射线衍射仪的收购。授予机构。 一个新的表XRD将取代现存的，但老化的西门子D5000 XRD（老式1989年）。 XRD将支持需要快速识别细晶粒材料相和细化晶体结构的研究。 将得到支持的研究包括：研究低级变质岩中的粘土矿物组合，以确定交代活动区;研究土壤中的页硅酸盐，以了解土壤的阳离子交换行为;研究湖泊沉积物的粘土矿物学，以了解其形成的古海洋条件。 该工具将支持本科生在这所四年制文科院校的研究培训，该院校的女性和贫困学生入学率历来很高。

1229257WalkerThis Major Research Instrumentation (MRI) Program grant supports acquisition of a powder x-ray diffractometer for the Department of Earth Science and Geography at Vassar College, a non-Ph.D. Granting institution. A new table XRD will replace an extant but aging Siemens D5000 XRD (vintage 1989). The XRD will support research that requires rapid phase identification of fine grained materials and crystallographic structure refinement. Research that will be supported includes studies of clay mineral assemblages in low grade metamorphic rocks in order to determine zones of metasomatic activity, studies of phyllosilicates in soils to understand the cation exchange behavior of soils; and studies of the clay mineralogy of lacustrine sediments in order to understand the paleoevironmental conditions of their formation. The instrument will support undergraduate student research training at this four year liberal arts institution with a historically high enrollment of women and underprivileged students.***